Brightside® Polyurethane is the one of the most technically advanced one-part polyurethanes available. Brightside uses Polyflow 4000®, a unique polyurethane resin, which yields excellent flow and leveling characteristics as well as incredible abrasion and chemical resistance. Taking advantage of the latest in ultraviolet technology insures longer color and gloss retention. Together these technologies create a one-part polyurethane which gives the look of a two-part polyurethane with the application ease of a one-part enamel. Brightside can be applied to fiberglass, wood, steel, aluminum and properly prepared epoxy surfaces. Brightside can be used to paint hull sides and decks. Use anywhere above the true waterline where you are looking for long lasting performance and ease of application. Can be used with Interlux® Solvent 333 for Brushing or Interlux® Solvent 216 for Spraying